JPH09150174A - Sewage disposal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably use a sewage disposal device over a long period of time by providing a float floating on a liq. surface of a sewage in a treating tank aerating the sewage and providing a foam generation detecting sensor at the float. SOLUTION: A night soil aerated and decomposed preliminarily in a stirring tank 1 is overflowed to the treating tank 20 and aerated with an air from the second aerating pipe 24. A sliding cylinder 29 having an open port at a side surface is connected with permitted vertical movement at a lower part of the second stack 28 of the treating tank 20. Then the sliding cylinder 29 is floated on the liq. surface of the night soil with the float 31. Then the sliding cylinder 29 is mounted so that its lower end is brought into contact with a bottom of the tank 20 when a night soil level is a storing standard water level B. The second foam detecting part 32 is provided on the surface of the float 31 to detect the foam generated in the treating tank 20 and to input to a controlling part 23. A flow rate regulating valve is controlled by the input of this foam generation detecting signal and a prescribed amount of water is sprayed from the second sprinkling pipe 36 to destroy the foam.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage treatment apparatus for treating night soil and gray water.

[0002]

2. Description of the Related Art As an apparatus of this type, for example, Japanese Patent Laid-Open No. 64-64-
Japanese Patent No. 75100 (C02F 11/02) is known. This human waste treatment device aerates the human waste collected in the treatment tank, gives oxygen to aerobic bacteria in human urine, purifies human urine by the activity and chemical reaction of the aerobic bacteria in human urine, and produces carbon dioxide and the like. By converting the gas into water and water, and exhausting the water as water vapor together with a gas such as carbon dioxide from an exhaust stack, human waste is treated.

[0003]

However, in the conventional structure, bubbles are generated by aerating the waste water in the treatment tank, and when the waste water is continued to be used as it is, the liquid surface of the waste water is covered with the foam, so that the waste water is not discharged. There is a problem that the amount of evaporation decreases and the efficiency of wastewater treatment remarkably deteriorates.

The present invention has been made to solve the above problems, and an object thereof is to provide a sewage treatment apparatus which can be stably used for a long period of time.

[0005]

[Means for Solving the Problems] A first means for solving the above problems is a treatment tank having an inflow port for inflowing sewage, an aeration device for aerating the inside of the treatment tank, and an inside of the treatment tank. It is characterized in that it is provided with an exhaust tube for exhausting gas and the like, and a sensor mounted on a float floating above the liquid surface of the waste water in the treatment tank, for detecting the generation of bubbles.

By the first means, since the sensor for detecting the generation of bubbles in the processing tank is arranged in the float, the generation of bubbles can be surely detected regardless of the water level of human waste.

[0007] A second means for solving the above problems is as follows.
A treatment tank having an inflow port for inflowing dirty water, an aeration device for aerating the inside of the treatment tank, an exhaust cylinder provided with an exhaust fan for exhausting gas and the like in the processing tank, and an up-and-down movable in the exhaust cylinder. Arranged in a float that is supported and floats on the surface of the wastewater,
And a sensor for detecting the generation of bubbles.

By the second means, since the sensor for detecting the generation of bubbles in the processing tank is arranged in the float, the generation of bubbles can be surely detected regardless of the water level of human waste. Further, since the float can be moved up and down in the exhaust stack, the generation of bubbles gathering around the exhaust stack due to exhaust can be detected quickly and reliably.

[0009] A third means for solving the above problems is as follows.
A treatment tank having an inflow port for inflowing sewage, an aeration device for aerating the inside of the treatment tub, an exhaust pipe for exhausting gas and the like in the treatment tub, and a float floating on the liquid surface of the sewage in the treatment tub. A sensor for detecting the generation of bubbles, a supply means for supplying water onto the surface of the waste water in the treatment tank, and a control means for controlling the supply means based on the output of the sensor. It is characterized by that.

By the third means, since the sensor for detecting the generation of bubbles in the processing tank is arranged in the float, the generation of bubbles can be surely detected regardless of the water level of human waste. Further, when the generation of bubbles is detected, water is supplied on the liquid surface of the wastewater to eliminate the bubbles.

A fourth means for solving the above-mentioned problems is as follows.
A stirring tank having an inflow port for the dirty water to flow in, an aeration device for aerating the inside of the stirring tank, an exhaust pipe for exhausting gas or the like in the stirring tank, and a treatment tank into which the dirty water in the stirring tank flows. An aeration device for aerating the inside of the treatment tank, and a sensor arranged in the stirring tank for detecting the generation of bubbles are provided.

By the fourth means, the generation of bubbles in the stirring tank is surely detected.

A fifth means for solving the above-mentioned problems is as follows.
A stirring tank having an inflow port for the dirty water to flow in, an aeration device for aerating the inside of the stirring tank, an exhaust pipe for exhausting gas or the like in the stirring tank, and a treatment tank into which the dirty water in the stirring tank flows. An aeration device for aerating the inside of the treatment tank, a sensor arranged in the stirring tank for detecting the generation of bubbles, a supply means for supplying water to the surface of the wastewater in the stirring tank, and an output of the sensor. Control means for controlling the water supply means based on the above.

By means of this fifth means, the occurrence of bubbles in the stirring tank can be reliably detected. Further, when the generation of bubbles is detected, water is supplied on the liquid surface of the wastewater to eliminate the bubbles.

A sixth means for solving the above-mentioned problems is as follows.
A stirring tank having an inflow port for the dirty water to flow in, an aeration device for aerating the inside of the stirring tank, an exhaust pipe for exhausting gas or the like in the stirring tank, and a treatment tank into which the dirty water in the stirring tank flows. An aeration device for aerating the inside of the treatment tank, and a sensor arranged in a float floating on the surface of the waste water in the stirring tank, for detecting generation of bubbles are characterized.

By the sixth means, since the sensor for detecting the generation of bubbles in the stirring tank is arranged in the float, the generation of bubbles can be surely detected regardless of the water level of human waste.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the urine processing apparatus shown in FIGS.

Reference numeral 1 is a stirring tank buried in the ground, 2 is a connecting pipe for connecting the stirring tank 1 to a toilet bowl (not shown), and 3 is provided in the stirring tank 1 and connected to the connecting pipe 2. With a letter tube, toilet paper and human waste discharged from the toilet bowl,
It is supplied from a tank (not shown) and is temporarily stored in the J-shaped pipe 3 through the connecting pipe 2 together with cleaning water for cleaning the toilet bowl. Reference numeral 4 denotes a lid that closes the stirring tank 1, and is equipped with a first intake cylinder 5 that supplies outside air into the stirring tank 1.

Reference numeral 6 denotes a first aeration pipe arranged at the bottom of the stirring tank 1, which is connected to a first blower 8 via a first supply pipe 7 so as to aerate the night soil in the stirring tank 1. Therefore, the first aeration pipe 6, the first supply pipe 7 and the first air blower 8 constitute a first aeration device.

Reference numeral 9 denotes a first exhaust pipe connected to the upper part of the stirring tank 1, which is connected to a second exhaust pipe 28 which will be described later and exhausts gas and the like from the first exhaust pipe 9 and the second exhaust pipe 28. It is connected to the exhaust stack 10. Reference numeral 11 is an exhaust fan installed in the exhaust pipe 10, and includes the first intake pipe 5 and a second exhaust pipe which will be described later.
In order to take in the outside air from the intake cylinder 27, the exhaust amount is set to be larger than the total blow amount of the first blower 8 and the second blower 28 described later.

Reference numeral 12 is a first bubble detector installed at a position corresponding to a position higher than a wastewater outflow pipe 21 of the first supply pipe 7 which will be described later, and detects a bubble generated in the stirring tank 1. It has become.

The structure of the first bubble detector 12 will be described in detail with reference to FIG.

The first bubble detecting section 12 connects one end of a pair of energizing cords 13 to a stainless steel electrode 14 and an electrode 15, respectively, and connects the energizing cord 13 and the electrodes 14 and 15 to a waterproof tubular shape. It is covered with a holding part 16 for waterproofing, and the electrodes 14 and
A part of 15 is exposed from the holding part 16. The holding unit
A fixing part 17 for mounting the first bubble detection part 12 is formed on the 16 and the holding part 17 is fixed at a position corresponding to a position higher than a sewage outflow pipe 21 of the first supply pipe 7 described later. There is.
The other end of the energizing cord 13 is connected to a control unit 23 described later, and the resistance value detected between the electrodes 14 and 15 is sent as an output to a control circuit 38 described later.

Normally, the resistance value between the electrodes 14 and 15 is infinite because only air exists between the electrodes, but bubbles are generated in the stirring tank 1 and generated between the electrodes 14 and 15. When the bubbles adhere, the resistance value changes to a predetermined value (several tens of kilohms in this embodiment) or less, so that it can be known that the bubbles have occurred.

Reference numeral 18 denotes a first sprinkling pipe installed on the upper part of the stirring tank 1, which is connected to a tank (not shown) for supplying flush water for the toilet via a first water supply pipe 19 and controlled by a control circuit 38 described later. The water in the tank is sprinkled in the stirring tank 1 and on the urine surface by a first flow rate adjusting valve 39 described later.

Reference numeral 20 denotes a processing tank buried in the ground, which is connected to the stirring tank 1 via a wastewater outflow pipe 21. Reference numeral 22 denotes an electrical equipment storage box disposed above the processing tank 20, which has a large number of intake ports (not shown) formed on its side surface and closes the processing tank 20 with a bottom plate. The second blower device 26 described later, the first blower device 8, the exhaust fan 11, the control unit 23 and the like which has a control circuit 38 described later that controls the second blower device 26, the heater 33 and the like described later are housed. There is.

A second aeration pipe 24 is provided at the bottom of the treatment tank 20 and is connected to a second air blower 26 through a second supply pipe 25 so as to aerate the night soil in the treatment tank 20. ing. The second aeration pipe 24, the second supply pipe 25, and the second blower device 26 constitute a second aeration device. Reference numeral 27 is a second intake cylinder whose upper part is supported by the bottom plate of the electrical equipment storage box 22 and supplies the outside air into the processing tank 20. 28 is connected to the upper part of the processing tank 20,
It is a second exhaust stack that exhausts gas and the like in 20.

A sliding cylinder 29 is vertically connected to the lower part of the second exhaust cylinder 28 and has an opening 30 on the side surface. Reference numeral 31 is a float for floating the sliding cylinder 29 in the urine, which floats the sliding cylinder 29 below the opening 30 and in the processing tank 20, and the urine water level slides at the stored standard water level B. The lower end of the tube 29 is attached to a position where it contacts the bottom of the tank.

Reference numeral 32 denotes a second member mounted on the upper surface of the float 31.
The bubble detection unit detects bubbles generated in the processing tank 20.
The second bubble detection unit 32 has the same structure as the first bubble detection unit 12, and thus the description thereof is omitted.

Reference numeral 33 denotes a heater disposed in the night soil of the inner bottom of the treatment tank 20. The heater 33 is disposed on the second aeration pipe 24 to prevent the bottom surface of the treatment tank 20 from being affected by heat. The temperature is maintained at a predetermined temperature for activating the activity of aerobic bacteria, in the range of 30 to 40 degrees Celsius in this embodiment.

Reference numeral 34 denotes a first water level detecting section arranged in the processing tank 20. The heater 33 arranged in the processing tank 20 detects a minimum storage water level A at which the heater 33 is immersed in the minimum urine. ing. Reference numeral 35 denotes a second water level detection unit arranged in the treatment tank 20 and detects a storage upper limit water level C (a water level that can be used for about 7 days in this embodiment) slightly lower than the full water level of the urine in the treatment tank 20. It is like this.

Reference numeral 36 is a second sprinkling pipe installed in the upper part of the treatment tank 20, which is connected to a tank (not shown) for supplying flush water for the toilet via the second water supply pipe 37 and controlled by a control circuit 38 described later. The water in the tank is sprinkled in the treatment tank 20 and on the urine surface by a second flow rate adjusting valve 40 described later.

Next, the electric circuit of this embodiment will be described with reference to FIG. 38 is a first water level detection unit 34 for detecting the lower limit water level A of urine in the treatment tank 20, a second water level detection unit 35 for detecting the upper limit water level C of urine in the treatment tank 20, and the generation of bubbles in the stirring tank 1. Is a control circuit for inputting the output from the first foam detection unit 12 for detecting the occurrence of bubbles and the second foam detection unit 32 for detecting the generation of bubbles in the processing tank 20, and the first for supplying air to the urine in the stirring tank 1. Blower 8 and second blower for supplying air to the human waste in the treatment tank 20
26, a heater 33 for maintaining the human waste in the processing tank 20 at a predetermined temperature, an exhaust fan 11 for exhausting gas in the stirring tank 1 and the processing tank 20
Is controlled.

Reference numeral 39 is a first flow rate adjusting valve which restricts the supply of water from a tank (not shown) to the first sprinkler pipe 18, and when the first bubble detector 12 detects bubbles generated in the stirring tank 1, Based on the output of the control circuit 38, the first flow rate adjusting valve 39 is opened for a predetermined time, and a predetermined amount of water is sprayed from the first sprinkler pipe 18 into the stirring tank 1 and onto the urine surface.

Reference numeral 40 is a second flow rate adjusting valve for restricting the supply of water from a tank (not shown) to the second sprinkling pipe 36, and controls when the bubbles generated in the treatment tank 20 are detected. circuit
The second flow rate adjusting valve 40 is opened for a predetermined time based on the output of 38,
A predetermined amount of water is sprinkled from the second sprinkling pipe 36 into the treatment tank 20 and sprinkled on the urine surface.

Reference numeral 41 is an alarm device constituted by a buzzer, an indicator, etc. arranged in the toilet, and when the second water level detector 35 detects the upper limit water level C of the urine stored in the treatment tank 20, the control circuit
Based on the output of 38, it is designed to give an alarm notifying that water is full. Reference numeral 42 is an energizing lamp composed of a display or the like arranged in the toilet, and is for displaying that the human waste treatment device is in operation.

Thus, the discharged human waste is temporarily accumulated in the J-shaped pipe 3 through the connecting pipe 2 together with the toilet paper and the cleaning water for cleaning the toilet bowl. As the number increases, the mixed urine overflows from the J-shaped tube 3 into the stirring tank 1. The human excrement collected in the agitation tank 1 is agitated by the air supplied from the first aeration pipe 6 by the drive of the first air blower 8, and oxygen is dissolved in the human excrement, and the activity and chemical reaction of aerobic bacteria The gas such as carbon dioxide and steam generated by preliminarily decomposing human waste is forcibly exhausted from the first exhaust pipe 9 by the exhaust fan 11, and the outside air flows into the stirring tank 1 from the first intake pipe 5 as the exhaust gas is exhausted.

Since the human waste in the stirring tank 1 is stored up to the height of the wastewater outflow pipe 21, the human waste collected in the stirring tank 1 is sufficiently decomposed and preliminarily decomposed until it overflows into the treatment tank 11. When the discharged human waste reaches the height of the sewage outflow pipe 21, it overflows and flows into the treatment tank 20.

The human urine flowing into the treatment tank 20 is agitated by the air supplied from the second aeration pipe 24 by the drive of the second air blower 26, and oxygen is dissolved in the human urine so that the activity of aerobic bacteria. The gas such as carbon dioxide and water vapor that is decomposed by the chemical reaction with
Through the second exhaust pipe 28 to be forcibly exhausted by the exhaust fan 11, and the outside air flows into the processing tank 20 from the second intake pipe 27 with the exhaust.

When the level of human waste water in the treatment tank 20 rises and the first water level detector 34 detects that the water level is lower than the storage lower limit water level A, the control circuit 38 controls the heater 33 to favor the urine in the treatment tank 20. The activity of aerobic bacteria is maintained at the optimum temperature, the activity of aerobic bacteria is activated, and the decomposition of urine is further enhanced.

Since the urine water level in the stirring tank 1 is stored only up to the height of the sewage outflow pipe 21, a stable water level is maintained.
When bubbles are generated from the urine in the stirring tank 1 by the aeration by the first aeration device, the generation of bubbles can be detected by the first bubble detection unit 12.

Normally, the resistance value between the electrodes 14 and 15 of the first bubble detection unit 12 is infinite, but when bubbles are generated, the bubbles are generated by the electrodes.
When the output is input to the control circuit 38, the control circuit 38 is agitated because the resistance value between the electrodes 14 and 15 changes to a predetermined value (tens of kilohms in this embodiment) or less. When it is judged that bubbles have occurred in the tank 1, the first flow rate adjusting valve 39 is controlled based on the output of the control circuit 38, and a predetermined amount of water is discharged from the first sprinkler pipe 18 into the stirring tank 1 where bubbles have occurred. Sprinkle water on the surface of urine.

By spraying water from the first sprinkling pipe 18 on the surface of the urine in the stirring tank 1 in which bubbles are generated, water is brought into direct contact with the bubbles to destroy the bubbles and eliminate the bubbles generated in the stirring tank 1. .

Although the water level of the urine in the treatment tank 20 changes, when bubbles are generated from the urine in the treatment tank 20 due to the aeration from the second aeration device, the first urine attached to the upper surface of the float 31 floating above the liquid surface of the human urine The 2 foam detection unit 32 can always detect the foam generated on the liquid surface of the human urine.

That is, when the second bubble detector 32 detects a bubble,
Since the resistance value between the electrodes changes as in the case of the first bubble detector 12, its output is input to the control circuit 38, and the control circuit 38
Determines that bubbles have formed in the processing tank 20. Then, the second flow rate adjusting valve 40 is controlled based on the output of the control circuit 38, and a predetermined amount of water is sprayed from the second sprinkling pipe 36 onto the surface of the urine in the treatment tank 20 in which bubbles have been generated. Directly contacts the bubbles to destroy the bubbles and eliminate the bubbles generated in the processing tank 20.

The second bubble detector 32 is attached to the float 31 that slides vertically below the second exhaust pipe 28, and is accompanied by the flow of gas or the like in the processing tank 20 through the opening 30. hand,
Since bubbles gather near the second bubble detector 32, it is possible to detect the occurrence of bubbles earlier.

During long-term travel, the inflow of pre-decomposed sewage into the treatment tank 20 may be stopped for a long period of time. In such a case, the water level of the night soil in the treatment tank 20 lowers and falls below the standard storage water level B. For example, since the bottom surface of the sliding cylinder 29 is in contact with the bottom surface of the treatment tank 20, the distance between the opening 30 of the sliding cylinder 29 and the urine surface becomes longer as the water level decreases, and the exhaust from the opening 30 causes The amount of air in contact with the urine surface is reduced to suppress the evaporation of urine.

Further, the first urine level detection unit 34
If it is detected that the temperature is lower than the lower limit storage water level A, the power of the heater 33 is cut off by the control of the control circuit 38 to prevent the decrease in the water level of the human waste. Further, even when the water level of human waste falls below the storage lower limit water level A, the aeration from the second aeration pipe 24 maintains the activity and chemical reaction of the aerobic bacteria and continues the decomposition.

In this embodiment, the stirring tank 1 and the processing tank 20 are used.
However, the stirring tank 1 may be omitted, and the discharged human waste may directly flow into the processing tank 20.

In the present embodiment, the first foam detector 12 for detecting the occurrence of bubbles in the stirring tank 1 is fixed to the first supply pipe 7, but the second foam detecting unit 12 for detecting the occurrence of bubbles in the processing tank 20 is used. Similar to the arrangement of the bubble detection unit 32 on the float 31, the first bubble detection unit 12 may be attached to the float. In this case, the float equipped with the first bubble detector 12 is attached to the first exhaust pipe 9 in the same manner as the float 31 of the first bubble detector 12 is supported by the second exhaust pipe 28 so as to be vertically movable. It is desirable to have a structure that allows vertical movement. With this configuration, when bubbles are generated in the stirring tank 1, the bubbles are collected in the vicinity of the first exhaust pipe 9 along with the exhaust from the first exhaust pipe 9, and the first foam detection unit 12 detects the bubbles. Therefore, the occurrence of bubbles can be detected quickly and reliably.

[0051]

According to the configuration of claim 1 of the present invention, since the sensor for detecting the generation of bubbles in the processing tank is arranged in the float, the generation of bubbles is surely performed regardless of the water level of human waste. It has an effect of being able to detect.

According to the second aspect of the present invention, since the sensor for detecting the generation of bubbles in the processing tank is arranged in the float, the generation of bubbles can be surely detected regardless of the water level of the night soil. be able to. Further, since the float is movable up and down in the exhaust tube, it is possible to quickly and surely detect the generation of bubbles that collect around the exhaust tube due to the exhaust.

According to the third aspect of the present invention, since the sensor for detecting the generation of bubbles in the processing tank is arranged in the float, the generation of bubbles can be surely detected regardless of the water level of human waste. be able to. Further, by detecting the generation of bubbles, it is possible to supply water onto the surface of the wastewater to eliminate the bubbles, and it is possible to suppress a decrease in the efficiency of wastewater treatment.

According to the configuration of claim 4 of the present invention, there is an effect that it is possible to reliably detect the generation of bubbles in the stirring tank.

According to the fifth aspect of the present invention, it is possible to reliably detect the generation of bubbles in the stirring tank. Further, by detecting the generation of bubbles, it is possible to supply water onto the surface of the wastewater to eliminate the bubbles, and it is possible to suppress a decrease in the efficiency of wastewater treatment.

According to the structure of claim 6 of the present invention, since the sensor for detecting the generation of bubbles in the stirring tank is arranged in the float, the generation of bubbles can be surely detected regardless of the water level of human waste. There is an effect such as being able to.

[Brief description of the drawings]

FIG. 1 is a side sectional view of one embodiment of the present invention.

FIG. 2 is an enlarged view of the main part.

FIG. 3 is a perspective view of the main part.

FIG. 4 is the same electric circuit diagram.

[Explanation of symbols]

 10 Exhaust tube 11 Exhaust fan 20 Processing tank 29 Sliding tube 30 Opening 31 Float 32 Second bubble detector 38 Control circuit

Claims (6)

[Claims] 1. A treatment tank having an inflow port for inflowing sewage, an aeration device for aerating the inside of the treatment tub, an exhaust stack for exhausting gas and the like in the treatment tub, and a liquid level of sewage in the treatment tub. A sewage treatment apparatus, comprising: a sensor attached to a float floating above and configured to detect generation of bubbles. 2. A treatment tank having an inflow port for inflowing sewage, an aeration device for aerating the inside of the treatment tank, an exhaust pipe provided with an exhaust fan for exhausting gas and the like in the treatment tank, and the exhaust pipe. A sewage treatment apparatus, which is provided in a float that is supported so as to be movable up and down and floats above the liquid surface of the sewage, and which detects a generation of bubbles. 3. A treatment tank having an inflow port for sewage, an aeration device for aerating the inside of the treatment tank, an exhaust pipe for exhausting gas and the like in the treatment tank, and a liquid level of the sewage in the treatment tank. A sensor that is arranged in a float that floats above and detects the occurrence of bubbles, a supply unit that supplies water to the surface of the wastewater in the processing tank, and a control unit that controls the supply unit based on the output of the sensor. A sewage treatment apparatus comprising: a control unit. 4. A stirring tank having an inflow port for inflowing sewage, an aeration device for aerating the inside of the stirring tub, an exhaust stack for exhausting gas and the like in the stirring tub, and sewage in the stirring tub for inflow A sewage treatment apparatus, comprising: a treatment tank that performs the aeration, an aeration device that aerates the inside of the treatment tank, and a sensor that is disposed in the stirring tank and that detects the generation of bubbles. 5. An agitation tank having an inflow port for inflowing sewage, an aeration device for aerating the inside of the agitation tub, an exhaust tube for exhausting gas and the like in the agitation tub, and sewage in the agitation tub for inflow A treatment tank, an aeration device for aerating the inside of the treatment tank, a sensor arranged in the stirring tank for detecting the generation of bubbles, and a supply means for supplying water onto the sewage liquid level in the stirring tank. And a control means for controlling the water supply means based on the output of the sensor. 6. An agitation tank having an inflow port for inflowing sewage, an aeration device for aerating the inside of the agitation tub, an exhaust stack for exhausting gas and the like in the agitation tub, and an inflow of sewage in the agitation tub. Disposed in a float that floats on the surface of the wastewater in the stirring tank, and an aeration device that aerates the inside of the processing tank,
A sewage treatment apparatus comprising a sensor for detecting the generation of bubbles.